1993-P Quarter- Counterfeit?

Found this in change this evening and noticed the rim. The surfaces look grainy as well. What say you?
Weight: 5.4 grams

Edge Image 1

Edge Image 2

Edge Image 3
Weight: 5.4 grams

Edge Image 1

Edge Image 2

Edge Image 3

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Comments
In honor of the memory of Cpl. Michael E. Thompson
President, Racine Numismatic Society 2013-2014; Variety Resource Dimes; See 6/8/12 CDN for my article on Winged Liberty Dimes; Ebay
-Paul
SM
SPMC - J-12338
McDCCC - Charter Member
Announcing: The Numismatic Enquirer - Website
If it where counterfeit, I'd be beating down your door.
Harrison
StopMotion
SPMC - J-12338
McDCCC - Charter Member
Announcing: The Numismatic Enquirer - Website
<< <i>Hey John,
If it where counterfeit, I'd be beating down your door.
Harrison
StopMotion >>
That's true!
<< <i>
<< <i>Hey John,
If it where counterfeit, I'd be beating down your door.
Harrison
StopMotion >>
That's true!
SPMC - J-12338
McDCCC - Charter Member
Announcing: The Numismatic Enquirer - Website
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
give it that strange look on the
reeded edge, in addition to
the surfaces being altered.
I've seen lots of reeded edge
coins, from dimes to halves, with
this altered edge type, and haven't
figured out the purpose of it, or
exactly how it was done.....
However, without a doubt, it is an alteration;
the coin itself is genuine.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
<< <i>The core is copper while the outer clad layers are copper-nickel alloy. If this coin was exposed to an acidic or other corrosive enviornment, you would expect the copper core, being more reactive, to deteriorate or disolve at a faster rate than the copper-nickel clad layers. Hence, the copper core is recessed compared to the copper-nickel clad layers. >>
just like your teeth corrode when you drink Mountain Dew
sorry, couldnt help myself Mountain Dew - same thing happens to enamel - seen too many mouths with teeth that are eaten away by bacteria acting on the gobs of sugar in MD - very similiar to the above coin - add additional citric acid to the mix and you have one potent poison!!
just completed 3d tour to Iraq and retired after 28+ years in the US Army
<< <i>The edge has been 'machined' to
give it that strange look on the
reeded edge, in addition to
the surfaces being altered.
I've seen lots of reeded edge
coins, from dimes to halves, with
this altered edge type, and haven't
figured out the purpose of it, or
exactly how it was done.....
However, without a doubt, it is an alteration;
the coin itself is genuine. >>
I, too, have seen numerous coins with the "machined" appearance. While I've
yet to see one in a BU roll or bag, I've always suspected it was something done
at the mint and during the strike.
You're right, though, and I hadn't noticed it.
Do you think it could be some sort of issue with the collar or the edge of the die?
Perhaps they are simply damaged at the mint in some operation. I've seen exam-
ples which appear to be virtually unc. These do appear machined but due to the
large number and the improbabilty of anyone going to the effort, it's difficult to be-
lieve it isn't part of some process.